|  | Mean cost (€) | Excess cost (€) | p-valuea | |
---|---|---|---|---|---|
 |  | Without mental disorder (N = 512,710) | With mental disorder | ||
Any mental disorder (N = 96,671) | 1–12 | 287 | 702 | 415 |  < 0.001 |
13–18 | 269 | 675 | 406 |  < 0.001 | |
19–24 | 255 | 648 | 393 |  < 0.001 | |
25–30 | 293 | 751 | 457 |  < 0.001 | |
Substance use (N = 19,507) | 1–12 | 364 | 1.222 | 858 |  < 0.001 |
13–18 | 326 | 1.130 | 804 |  < 0.001 | |
19–24 | 270 | 955 | 685 |  < 0.001 | |
25–30 | 280 | 1.004 | 724 |  < 0.001 | |
Anxiety (N = 40,523) | 1–12 | 276 | 745 | 469 |  < 0.001 |
13–18 | 306 | 848 | 543 |  < 0.001 | |
19–24 | 269 | 747 | 478 |  < 0.001 | |
25–30 | 301 | 847 | 546 |  < 0.001 | |
Mood disorders (N = 8613) | 1–12 | 251 | 1.492 | 1.240 |  < 0.001 |
13–18 | 332 | 2.036 | 1.705 |  < 0.001 | |
19–24 | 277 | 1.726 | 1.450 |  < 0.001 | |
25–30 | 308 | 1.940 | 1.632 |  < 0.001 | |
Psychosis and personality disorders (N = 5.745) | 1–12 | 247 | 1.869 | 1.623 |  < 0.001 |
13–18 | 296 | 2.324 | 2.028 |  < 0.001 | |
19–24 | 289 | 2.306 | 2.017 |  < 0.001 | |
25–30 | 306 | 2.472 | 2.166 |  < 0.001 | |
Attention deficit hyperactivity disorder (N = 16,986) | 1–12 | 281 | 671 | 390 |  < 0.001 |
13–18 | 253 | 623 | 370 |  < 0.001 | |
19–24 | 227 | 571 | 345 |  < 0.001 | |
25–30 | 257 | 659 | 403 |  < 0.001 | |
Conduct disorder (N = 26,415) | 1–12 | 262 | 716 | 454 |  < 0.001 |
13–18 | 270 | 755 | 485 |  < 0.001 | |
19–24 | 267 | 757 | 490 |  < 0.001 | |
25–30 | 332 | 947 | 616 |  < 0.001 | |
Eating disorder (N = 4629) | 1–12 | 272 | 918 | 646 |  < 0.001 |
13–18 | 331 | 1.137 | 806 |  < 0.001 | |
19–24 | 267 | 920 | 653 |  < 0.001 | |
25–30 | 337 | 1.164 | 827 |  < 0.001 | |
Self-harm (N = 664) | 1–12 | 163 | 2.058 | 1.895 |  < 0.001 |
13–18 | 378 | 5.040 | 4.661 |  < 0.001 | |
19–24 | 255 | 3.429 | 3.175 |  < 0.001 | |
25–30 | 366 | 5.027 | 4.661 |  < 0.001 | |
2 or more diagnoses (N = 19,567) | 1–12 | 281 | 1.253 | 972 |  < 0.001 |
13–18 | 303 | 1.397 | 1.094 |  < 0.001 | |
19–24 | 262 | 1.228 | 966 |  < 0.001 | |
25–30 | 293 | 1.388 | 1.096 |  < 0.001 |